对Ⅱ、Ⅲ期内痔有效，但对痔体纤维化、质较硬的Ⅲ期内痔疗效较差的外治法是：（）

A.枯痔钉疗法

B.贯穿结扎法

C.胶圈套扎法

D.枯痔法

E.以上均不对

Over a three-week period, the price of an ounce of gold increased by 25% in the first week, decreased by 20% in the following week, and increased by 5% in the third week. If the price of gold was G dollars per ounce at the beginning of the three weeks, what was the price, in terms of G, at the end of the three weeks ？（）

A. 0.95G

B.G

C. 1.05G

D. 1.1G

E. 1.15G